Drawing tools, opacity and undo/redo

The drawing tools are in the top left tab.

	Paintbrush and eraser - toogles between using the current drawing tool with the paintbrush and the eraser. The paintbrush draws using the currently selected colour. The eraser will remove the current layer's content allowing the content of any lower layers or the white background to show through.
	Freehand tool - draw using a single touch.
	Filled shape tool - trace out a shape, using a single touch, which is filled with the current colour or erased.
	Line tool - touch the screen and then drag out a straight line from this starting point.
	Rectangle (filled) tool - touch a screen and drag out a rectangle. You can position, rotate and scale the rectangle with a second touch. When happy with the shape release the original touch.
	Ellipse (filled) tool - touch a screen and drag out an ellipse. You can position, rotate and scale the rectangle with a second touch. When happy with the shape release the original touch.
	Draw offset - set the draw point in relative to the touch point allowing you to move the draw point from under your finger. When selected a cross will be shown on screen representing the draw point. Touch the screen to set offset.
	Clear the current layer - touch and hold this button to eraser the entire content of the current layer.
	Paste from the camera - tapping this button will allow you to take a picture with the iPhone's camera (or pick a stored photo on an iPod Touch) and paste it into your flickbook. Touch and hold this button to fill the entire current layer with the photo.
	Brush size - set the brush size used when drawing with the freehand, line, rectangle and ellipse tools. When using one of these drawing tools the brush size button will be present in the top left corner of the screen. Use two touches to set the size. The brush size for the paintbrush and the eraser are set independently.

When using the freehand, filled shape or line drawing tool, the draw point will be shown with an icon. For the freehand and line tool this icon is a circle giving the current brush size. For the filled shape tool or if the brush size is too small to be represented this icon is a cross hair. Using the draw offset, draw point icon and positioning the drawing area allows precise drawing.

Opacity

The current opacity is shown on the opacity button in the top right of the draw ara. The opacity value affects paint, eraser and paste actions, with 100 being solid and 0 being fully transparent.

Touch the opacity button and then drag up and down the screen increases and descreases the opacity. Tapping the opacity button sets the opacity back to 100. It is possible to change the opacity at any point during a stroke.

Undo/redo

Undo and redo - you can undo and redo your drawing tool marks and paste operations. If you cannot undo or redo then the button will not be available.

Draw area transform controls

The draw area can be moved, scaled and rotated using two touches. Using the following buttons allows you to control what aspects of the draw area change.

	Enable, disable or reset the draw area position.
	Enable, disable or reset the draw area scaling.
	Enable, disable or reset the draw area rotation.

Tapping one of the buttons enables or disables an aspect. The button will be highlighted when it is enabled.

Touch and hold a button to reset the corresponding aspect.